Has the left’s half-century struggle to return the Democratic Party to its working-class roots become an exercise in futility? This is perhaps the most vexing question facing the party of liberal America.It is not an easy one to answer. In recent years, the Democratic electorate has moved in two directions.First: The percentage of Democrats with a college degree has almost doubled, growing to 41 percent in 2019 from 22 percent in 1996.Second: While the percentage of Democrats who are non-Hispanic and white has fallen to 59 percent from 76 percent over the same period, according to Pew Research, nonwhite Democrats — Black, Hispanic, Asian American or members of other minority groups — have grown to 41 percent from 24 percent.In terms of the entire U.S. population (as of July 2022), those described by the census as “white alone, not Hispanic or Latino” made up 58.9 percent of the United States — down from 69.1 percent in 2000 — while the percentage of Black, Hispanic, Asian American and other minorities increased to 41.1 percent from 30.9 percent over the same period.Have American politics reached a tipping point?Eitan Hersh and Sarang Shah, political scientists at Tufts and Berkeley, contended in their Aug. 1 paper, “The Partisan Realignment of American Business,” that both the Democratic and the Republican Parties have undergone radical reorientations:The ongoing development of the Democratic Party as a party not of labor but of socioeconomic elites, and the ongoing development of the Republican Party as a party not of business but of working-class social conservatives, represents a major, perhaps the major, American political development of the 21st century.In an email, Hersh elaborated on their analysis: “This is one of the most important developments in recent American political history because we seem to be in the midst of a realignment, and that doesn’t happen every day or even every decade.”One reflection of this trend, according to Hersh, is the growing common ground that cultural liberals and corporate America are finding on social issues:A company taking a position on L.G.B.T.Q. rights may at first seem like it’s a company not staying in its lane and getting into political questions unrelated to its core business. But if the company needs to take a position in order to satisfy its work force or because potential new hires demand political activism, then the decision is no longer just social; it’s economic.Another example: For a while it looked like the Republican Party could appeal to social conservatives but maintain the economic policy supported by business elites. But now, you start to see real attempts by Republican thought leaders to be more assertive in meeting the economic needs of their constituencies.As a result of this realignment, Hersh argued, a crucial battleground in elections held in the near future will be an intensifying competition for the support of minority voters:Democrats can win with college-educated whites plus nonwhite voters. They can’t win with more defection from nonwhite voters. The Republicans are making the argument that their cultural and economic values are consistent with working-class Americans and that their positions transcend racial categories.If the Republican Party “could move beyond Trump and focus on this vision (which, of course, is impossible with Trump there making everything about Trump), they’d be presenting a set of arguments and policies that will be very compelling to a large number of Americans,” Hersh wrote.Ruy Teixeira, a senior fellow at the American Enterprise Institute who has long argued that Democrats need to regain support from white voters without college degrees and to stop defections among working-class Black and Hispanic voters, argued that the socioeconomic elite — well-educated, largely white liberals — are imposing damaging policies on the Democratic Party.In a recent essay, “Brahmin Left vs. Populist Right,” Teixeira wrote:The fact is that the cultural left in and around the Democratic Party has managed to associate the party with a series of views on crime, immigration, policing, free speech and, of course, race and gender that are quite far from those of the median working-class voter (including the median nonwhite working-class voter).Instead, Teixeira contended:Democrats continue to be weighed down by those whose tendency is to oppose firm action to control crime or the southern border as concessions to racism, interpret concerns about ideological school curriculums and lowering educational standards as manifestations of white supremacy and generally emphasize the identity politics angle of virtually every issue. With this baggage, rebranding the party — making it more working-class oriented and less Brahmin — is very difficult, since decisive action that might lead to such a rebranding is immediately undercut by a torrent of criticism.I asked Teixeira whether the changing Democratic Party has reached a point of no return on this front, and he emailed back:A good and big question. In the short run it looks very difficult for them to shed much of their cultural radicalism and generally make the party more attractive to normal working-class voters. Over the medium to long term, though, I certainly think it’s possible, if there’s an internal movement and external pressures/market signals consistent with the need for a broader coalition. That is, if enough of the party becomes convinced their coalition is too narrow and therefore some compromises and different approaches are necessary. That may take some time.Michael Podhorzer, a former political director of the A.F.L.-C.I.O., agreed that “There is no way to define ‘socioeconomic elites’ in which it isn’t obvious that both parties are dominated by socioeconomic elites.” He added that “since the 1970s, both left and right parties now represent different factions within the socioeconomic elites.”In the process, Podhorzer argued, “Labor and working people have been demoted from a seat at the table to a constituency to be appealed to.”The idea that the Democratic Party is a pro-business party, Podhorzer wrote, “is hardly a bulletin. It’s been pro-business since Carter. Deregulation (including Glass-Steagall, holding companies, communications, etc.) as well as trade agreements (NAFTA, China W.T.O., proposed T.P.P., etc.) are all Democratic Party ‘accomplishments.’”Podhorzer, however, took sharp issue with Hersh, Shah and Teixeira. “I find Teixeira’s constant harping on Democratic elites, as well as Hersh’s and others’ use of the term to be playing with fire at this moment,” he told me.The focus on cultural elitism, in Podhorzer’s view, masksbillionaires’ collective influence over the political process or the ways in which their success is responsible for immiseration and what we call inequality. This enables fascist politicians to shift the blame to intellectual and cultural elites, like liberals or people with college degrees, redirecting the inevitable resentments of the losers in the winner-take-all economy.For that reason, Podhorzer continued,centrist commentators and Democratic strategists who have aggressively and continuously diagnosed the party’s capture by a woke elite unwittingly — and without justification — affirm the fascist worldview in which cultural, rather than economic or political, elites are the source of their disappointments.However these disputes are resolved, there is clear evidence of the demographic realignment of the Democratic Party.Brian Schaffner, a political scientist at Tufts, writing by email, demonstrated the evolution of the Democratic and Republican electorates by citing data from the Cooperative Election Study, which he oversees:We ask workers what industries they work in, and just between 2014 and 2020 we saw some notable shifts, depending on the category. In 2014, 42 percent of people working in construction identified as Republican, and 38 percent called themselves Democrats, a four-point advantage for Republicans. Just six years later, that group was 49 percent Republican and 29 percent Democratic, a 20-point gap. By contrast, Republicans had a nine-point edge among people who work in finance and insurance in 2014 (48 percent Republican, 39 percent Democratic), but by 2020, Democrats held a three-point edge (45 percent Democratic, 42 percent Republican).The Republican advantage among manufacturing workers has grown to 13 points from seven points over those six years, according to Schaffner, and the four-point Democratic advantage among transportation and warehouse workers has turned into an eight-point Republican edge. Workers in professional, scientific and technical industries were evenly split in 2014, but by 2020, Democrats had gained a 15-point advantage. In the education industry, Democrats increased their advantage from a 14-point gap in 2014 to a 22-point advantage in 2020.Schaffner wrote that “these are pretty sizable shifts in partisanship, which fit the narrative that white-collar workers are shifting more Democratic at the same time that blue-collar industries are becoming more Republican.”There are, however, strong arguments that despite the ascendance of well-educated, relatively comfortable Democrats, the party has retained its commitment to the less well off, as evidenced by the policies enacted by the Biden administration.Most of those who challenged the Hersh-Shah thesis did not dispute the ascendance of the well educated in Democratic ranks; instead they argued that the party has retained its ideological commitments to the bottom half of the income distribution and to organized labor.Jacob Hacker, a political scientist at Yale, expressed strong disagreement with the Hersh-Shah paper in an email responding to my inquiry.“There is no question that the class profile of Democratic voters has become U-shaped, with both poorer and higher-income voters siding most strongly with the party,” Hacker wrote, but he went on to say:Even as the Democratic Party has come to rely more heavily on affluent suburban voters, its platform, legislative agenda and national elected representatives’ communications via Twitter have all remained highly focused on economic issues. In fact, the national platform and Democratic agenda have become substantially bolder — that is, bigger in scope, broader in policy instruments (e.g., industrial policy), and generally more redistributive overall.Hacker specifically challenged Hersh and Shah’s claim that corporate America is shifting to the Democratic Party, citing evidence of the Republican tilt of contributions by Fortune 1,500 C.E.O.s, by the Forbes Wealthiest 100 and in the distribution pattern of dark money.Steve Rosenthal, a former political director of the A.F.L.-C.I.O. who is now a political consultant, agreed with Hacker on the pro-labor commitment of the Biden administration, despite the severe weakening of the labor movement in recent decades. Biden, he wrote by email, “has been the most pro-union, pro-worker president we have had in my lifetime.”Rosenthal acknowledged, however, that the union movement has suffered terrible setbacks in recent years, especially in Midwest battleground states:For decades, we’ve been saying both parties are too accommodating to corporate America. Perhaps the biggest change is not in how the parties operate or what they stand for but the decline in the labor movement. In the mid-90s, between 30 and 40 percent of the electorate in states like Michigan, Wisconsin, Pennsylvania and Ohio came from union households, and they were voting 60 percent-plus Democratic. I used to say even back then that the only white working-class voters who were voting Democratic were in unions.Since then, Rosenthal wrote, “their vote share has decreased precipitously, to a low of now something like 14 percent in Wisconsin to the mid-20 percent in the other states.”Julie Wronski, a political scientist at the University of Mississippi, contended that the Hersh-Shah paper creates a false dichotomy:The partisan business and labor interests are an either-or scenario. The Democratic Party can be the party of labor and the party of socioeconomic elites. The Republican Party can be the party of business and working-class social conservatives.Democrats can support labor interests, Wronski wrote by email,through initiatives to raise the minimum wage and bolster unions and can support the more progressive social issues of socioeconomic elites that relate to D.E.I. initiatives. Republicans can provide tax breaks and the like to businesses while still firmly espousing socially conservative positions on issues related to racial, religious and gender identity. Republicans can be the party of supporting red state businesses, while Democrats can be the party of supporting blue state businesses.Business, Wronski argued, is not so much realigning with the Democratic Party as it is polarizing into different camps based on “cleavages in how businesses interact with the political realm based upon social issues,” with “partisan polarization of businesses based on social issues and the group identities of the company’s stakeholders, employees and clients.”Matt Grossmann, a political scientist at Michigan State, agreed by email thatthere is definitely a significant change in the party coalitions, though it has occurred slowly rather than in one critical election. The main demographic change is in education among white Americans: College-educated whites are moving toward Democrats, while non-college-educated whites are moving toward Republicans.This has not reversed the traditional class divide of the parties, Grossmann argued, “because high-income, low-education voters are the most Republican and low-income, high-education voters are the most Democratic,” while “nonwhite voters also remain much more Democratic.”Despite these shifts, Grossmann wrote that he does not “see evidence that the Democratic Party has abandoned redistributive politics or changed its positions on business regulation. Instead, they are increasingly emphasizing social issues and combining social concerns with their traditional economic concerns.”David Hopkins, a political scientist at Boston College, is writing a book with Grossmann. Hopkins argued in an email that “we are in the midst of a realignment, in the sense that the education gap between the two parties (separating degree-holding Democrats from degree-lacking Republicans) is now much larger than the income gap.”But, Hopkins stressed,party change on economic policy is the dog that hasn’t barked here. For all its conspicuously populist style, the Trump presidency’s biggest legislative achievement was a tax reform package that provided most of its benefits to wealthy and corporate taxpayers. And the Democrats show no signs of rethinking their traditional advocacy of an expanded welfare state funded by redistributing wealth downward from rich individuals and businesses — with Biden’s policy agenda ranging from greater education spending to a federal child tax credit to subsidized child care and prescription drug costs.Despite their new source of support among the well-educated affluent, Hopkins continued,Democrats still fundamentally see themselves as the defenders of the interests of the socially underprivileged. And despite their own contemporary popularity among the white working class, Republicans still define themselves as the champions of capitalism and entrepreneurship.Sean Westwood, a political scientist at Dartmouth, cast doubt on Hersh and Shah’s claims in an emailed response to my inquiry: “There are clearly changes in the role of socioeconomic elites in the Democratic Party and the role of the working class in the Republican Party, but the evidence doesn’t show that either party has abandoned its traditional base.”On average, Westwood continued,the Republican Party still maintains a wealthier base than Democrats, and Democrats still capture more support from labor than Republicans. Similarly, Republicans continue to vote for business interests, and Democrats continue to back pro-labor regulation. It is hard to say we are at a turning point in party composition and focus while these things are still true.It is possible, Westwood wrote, that the Hersh-Shah paper “could be prophetic, but a complete picture of American politics suggests it is too early to assess if we have truly seen a major development in American politics.”In the meantime, as the Democratic Party continues to win college-educated white voters by larger and larger numbers, the development of most concern to those determined to maintain the party’s commitment to the less well off is the incremental but steady decline in Democratic support from nonwhite voters.Over the past three presidential elections, according to a detailed Catalist analysis of recent elections, Democratic margins among Black voters without college degrees have steadily fallen: Barack Obama 97 to 3 percent, or a 94-point advantage in 2012; Hillary Clinton 93 to 6 percent, or an 87-point advantage in 2016; and Biden 90 to 8 percent, or an 82-point edge in 2020. The same pattern was true for Hispanic voters without degrees: Obama 70 to 27 percent, or 43 points; Clinton 68 to 27 percent, or 41 points; and Biden 60 to 38 percent, or 22 points.The current Democratic Party may actually be the best coalition that the left can piece together at a time when American politics is notable for contradictory, crosscutting economic, racial and cultural issues. But can the party, with its many factions, outcompete the contemporary Republican Party, a party that has its own enormous liabilities — most notably Donald Trump himself?The Times is committed to publishing a diversity of letters to the editor. We’d like to hear what you think about this or any of our articles. Here are some tips. And here’s our email: letters@nytimes.com.Follow The New York Times Opinion section on Facebook, Twitter (@NYTopinion) and Instagram. More